INDEX 
Tea, 333. 
Teleutospores, *257, *258. 
Temperature and root-absorption, 
40. 
Temperature, relation to germina- 
tion, 7, 8. 
Tendril, *103. 
Tendril climbers, *56, 57. 
Terminal bud, 50, 88, *90. 
Terminal flowers, App. I, *360. 
Tertiary root, 30. 
Testa, *5, 
Thallophytes, 214-264*, 
Thallus, 212. 
Thermostat, 8. 
Thistle, Russian, *193, 205. 
Thorns as branches, 124, 
Thyme, stoma of, *129. 
Tickle-grass, *193. 
Timber, 343-348. 
Timothy, variations in, 310. 
Tomato, study of, 181. 
Trametes, *259. 
Transition from stamens to petals, 
*160. 
Transpiration, 131-135. 
Transpiration, amount of, 134, 135. 
Transpiration, measurement of, 
*133, 134. 
Transportation by water, 195. 
Tree planting, 351, 352. 
Trees, 54. 
Trees, age of, 54, 55. 
Trillium, study of flower of, 143, 
144. 
Tropeolum leaf, App. I, *356. 
Tropeolum leaves, starch in, 139, 
*140. 
Tropexolum, petiole, coiling of, *57. 
Tropxolum, study of, 1-3. 
379 
Tropophytes, 114. 
Truncate, App. I, *856. 
Trunk, 52. 
Tuber, 59, *60. 
Tubular corolla, *152. 
Tulip, study of flower of, 144- 
146. 
Tumble-weeds, *193, 194. 
Turnip, seedling, *27. 
Twayblade, beetle on flower of, 
*172. . 
Twigs, study of, 49-51. 
Twiners, *57. 
Ulothrix, *305. 
Umbel, App. I, *359. 
Umbellet, App. I, *859. 
Underground stems, 58-61*. 
Uneatable plants, 123. 
Union of pistils, 154. 
Union of stamens, 153. 
Unisexual flowers, *149. 
Uredospores, *257. 
Variety, 208. 
Varnishes, 339. 
Vaucheria, type study, 225-229*. 
Vegetation, aquatic, 115. 
Vegetative organs, 24, 25. 
Vein, *98, *99, *101. 
Veining, *98, *99, *101. 
Venation, *98, *99, 100, *101, 102. 
Venus’ flytrap, *121. 
Vernation, 92, #93, *94. 
Vertically placed leaves, 110, *111. 
Vessel, 74, 78. 
Water, absorption by roots, 39, 40. 
Water, amount transpired, 134, 135. 
Water, course through leaf, 134. 
